<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Dom.css</title>
    <script src="../src/dom.js"></script>
</head>
<body>
<h1 id="header"></h1>

<script type="text/javascript">

Dom.html(Dom.id('header'), 'Hello World!');
console.log(Dom.html(Dom.id('header')));//prints Hello World!

</script>
</body>
</html>